"I snapped two of these drills making pilot holes in 3mm mild steel sheet. On breaking through to the other side, the flutes snatched and the bit broke halfway up the shank. I will buy this product again, but only because I have no choice as it's specific to the PowerChange arbor."
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Review 4 for Bosch Powerchange HSS Cobalt Pilot Drill
"Always breaks i have gone through 6 or 7 in the last 2 years ! I like the bosch powerchange for cutting holes in ceilings for downlights etc it is a good piece of kit but the powerchange pilot drill is so brittle and is the weak link."